Definition of 過酷事故 (かこくじこ)

noun
•
severe accident (esp. relating to a nuclear reactor)
Related Kanji
過 overdo, exceed, go beyond, error
酷 cruel, severe, atrocious, unjust
事 matter, thing, fact, business, reason, possibly
故 happenstance, especially, intentionally, reason, cause, circumstances, the late, therefore, consequently